The article presents the issue of diagnostic evaluation of the combustion process in a CI engine using accompanying processes. This work concerns vibroacoustic processes, from which the Authors selected vibration processes for evaluation. Due to the properties of the considered processes and the possibilities of their use in diagnosing both slow- and fast-changing processes occurring in internal combustion engines, both under laboratory conditions and during vehicle operation, it has become necessary to include these processes in the periodic and continuous analysis of the engine’s technical condition and the correctness of the processes occurring within it. A compression-ignition engine used in off-road vehicles with a gross vehicle weight exceeding 3500 kg was selected for the research. Considerations regarding the possibility of applying the method were carried out in the aspect of diagnostic analysis and its application in the diagnostic evaluation system of the combustion process, and in a broader sense, also in the aspect of limiting sources of excessive emissions resulting from irregularities in the process or degradation of the functional characteristics of the technical object, or potential damage occurring in its elements and subassemblies during operation. A non-linear method of analyzing vibration accelerations generated in the engine based on the use of deterministic chaos theory was applied, with the help of which non-linear components obtained from the time waveforms of the process were sought.(…)
The article contains 29933 characters.
Source: Logistyka Magazine